Cary SLP-05 in combination with Theta Citadels

I currently have a Cary 306 SACD and a pair of Theta Citadel monos (400 watt) in a dedicated 2ch setup. Speakers are Aerial 20T. All cabling from WireWorld. I mainly listen to pop and jazz music.

I wonder if the new Cary SLP-05 tube preamp will be a good match in this setup. All advice will be very much appreciated.